In this article, we will learn about hygrometers and its types. Let’s begin with the definition of the hygrometer. Hygrometer A hygrometer is an instrument that measures the humidity directly. Now discuss some terms. Humidity It is the measure of water vapour present in a gas or environment. It is measured in relative, absolute humidity or … Read more
Rechargeable batteries are those batteries that can be recharged again after discharge. You can find these batteries in your cordless tools, laptops, computers, cordless phones, and smartphones, etc. Rechargeable Batteries are also called as Secondary batteries. Rechargeable batteries are of four basic types: Nickel-cadmium (Ni-Cd), Nickel metal hydride (Ni-MH) Lithium-ion (Li-Ion) Lithium polymer (Li-Po) These batteries … Read more
Power quality refers to maintaining the near sinusoidal waveform of power distribution bus voltages and currents at rated magnitude and frequency. Power quality describes the extent of variation of the voltage, current, harmonics, and frequency of the power system. The poor power quality effects industrial competitiveness drastically and thereby impedes our efforts to turn into … Read more
With sustainable urbanization, economical personal mobility and security of energy in emphasis, there is a shift from the monopoly of Internal Combustion automobiles to alternative fuel vehicles. Alternative fuels are vehicle fuels that are not composed of petroleum. Alcohols, Compressed Natural Gas (CNG), Electricity, Hydrogen, Liquefied natural gas (LNG), Liquefied petroleum gas (LPG) (also called … Read more
A ground fault circuit interrupter (GFCI) is a device that cuts off an electric power supply when it detects the ground fault in the system and hence prevents the system from severe damage. The GFCI monitors the current flowing into different phases and neutral. It turns off the power supply by sending a tripping signal … Read more
You have heard about proximity sensors in your daily life that are commonly used in mobile or smartphones, tablets, etc. Proximity sensors are commonly used on mobile devices to detect if someone is in nominal range. A proximity sensor is a type of sensor which is able to detect the presence of nearby objects without any … Read more
What is an analog-to-digital converter? An analog-to-digital converter (ADC) is a system that converts an analog signal to a digital signal. For example, a sound picked up by a microphone into a digital signal. The output of a microphone, the voltage at a photodiode or the signal of an accelerometer are the examples of the … Read more
Superposition Theorem Definition In any linear bi-directional circuit having more number of sources, the response in anyone of the elements is equal to an algebraic sum of the responses caused by individual sources while the rest of the sources are replaced by its internal resistance. OR In a network of linear impedances containing more than … Read more
Figure. RVDT In the previous article, we have learned about Linear variable differential transformer (LVDT). Rotary Variable Differential Transformer (RVDT) is a variation of LVDT and used to sense angular displacement. It is a passive transducer. In short, RVDT provides a variable alternating current (AC) output voltage that is linearly proportional to the angular displacement … Read more
The State of Charge (SOC) has an important role in determining the remaining capacity of the battery pack. Accurate estimation of the SOC is very complex and is difficult to implement, because of the limited battery model. Battery State of Health (SOH) is an important indicator of the battery’s life. SOH reflects the ability of … Read more
